VN-200 User Manual
UM004
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2.2.1
VN-200 Rugged Power Supply
The nominal power supply for the VN-200 Rugged is 5 V DC.
The VN-200 Rugged internally has overvoltage protection set at a fixed voltage of 5.8 V. Upon
an overvoltage event the protection circuitry will disable power to the VN-200 to reduce
possibility of damage to the voltage regulator onboard the VN-200.
2.2.2
VN-200 Rugged Serial UART Interface
Table 8 - Serial I/O Specifications
Specification
Min
Typical
Max
Input low level voltage
-25 V
Input high level voltage
25 V
Output low voltage
-5.0 V
-5.4 V
Output high voltage
5.0 V
5.5 V
Output resistance
300 Ω
10 MΩ
Data rate
1 Mbps
Pulse slew
300 ns
2.2.3
VN-200 Rugged Reset, SyncIn/Out, and Other General I/O Pins
Table 9 - NRST Specifications
Specification
Min
Typical
Max
Input low level voltage
-0.5 V
0.8 V
Input high level voltage
2 V
5.5 V
Weak pull-up equivalent resistor
30 kΩ
40 kΩ
50 kΩ
NRST pulse width
20 μs
Table 10 - SyncIn Specifications
Specification
Min
Typical
Max
Input low level voltage
-0.5V
0.8V
Input high level voltage
2V
5.5V
Input Frequency
200 Hz
200 Hz
1 kHz
Pulse Width
500 μs
Table 11 - SyncOut Specifications
Specification
Min
Typical
Max
Output low voltage
0 V
0.4 V
Output high voltage
2.4 V
3.0 V
Output high to low fall time
125 ns
Output low to high rise time
125 ns
Output Frequency
1 Hz
200 Hz
